brcm2708: rename all patches from raspberrypi git tree to use 950 prefix

[openwrt/staging/lynxis.git] / target / linux / brcm2708 / patches-4.9 / 950-0004-Protect-__release_resource-against-resources-without.patch

diff --git a/target/linux/brcm2708/patches-4.9/950-0004-Protect-__release_resource-against-resources-without.patch b/target/linux/brcm2708/patches-4.9/950-0004-Protect-__release_resource-against-resources-without.patch
new file mode 100644 (file)
index 0000000..4b80ab0
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0004-Protect-__release_resource-against-resources-without.patch
@@ -0,0 +1,27 @@
+From 3115fe312a2c751954f1ab0f0ba07aea1c1c7d1b Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Fri, 13 Mar 2015 12:43:36 +0000
+Subject: [PATCH] Protect __release_resource against resources without parents
+
+Without this patch, removing a device tree overlay can crash here.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ kernel/resource.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+--- a/kernel/resource.c
++++ b/kernel/resource.c
+@@ -246,6 +246,12 @@ static int __release_resource(struct res
+ {
+       struct resource *tmp, **p, *chd;
+ 
++      if (!old->parent) {
++              WARN(old->sibling, "sibling but no parent");
++              if (old->sibling)
++                      return -EINVAL;
++              return 0;
++      }
+       p = &old->parent->child;
+       for (;;) {
+               tmp = *p;